Hammer.



V. T. LYNGH.

HAMMER.

APPLICATION FILED mm. 1915.

1,139,393., Patented May 11, 1915.

2 SHEETS-SHEET l.

w/nv ssas Mil/ENTOR j/Wn): 72am; Zyva wh BY M A TTOR/VEVS THE NORRISPETERS 60.. PHOm-LITHQ, WASHINGTON, D, C.

v. T. LYNCH.

HAMMER.-

APPLICATION FILED ma. 1915. 1,139,3Q3, Patented May 11, 1915. 2SHEETS-SHEET 2.

N N? i W/TNES s m 1 5/1/ ma 5 i7 16272022 724x452? ffiw I BY I ATTORNEYSTHE NORRIS PETERS CO4, PHOTD-LITHO., WASHINGTON. D, C.

imrrnn STATES PATENT OFFICE.

VERNON THOMAS LYNCH, OF CHICAGO, ILLINOIS.

HAMMER.

Specification of Letters Patent.

Patented May 11, 1915.

Application filed January 8, 1915. Serial No. 1,125.

thereof is to provide an implement which automatically makes a nail andholds the same in position for driving.

Another object is to provide means for feeding wire for the nails from acoil or the like.

A further object is to provide means for insuring the feeding of thesame length of wire for each nail formed and driven.

A further object is to provide means for forming a head of peculiarshape which is best adapted both for driving and for looking engagementwith the ob ect into which it is driven; and further objects are toprovide a device of this class which is simple in construction and use,entirely automatic in action other than the actual driving, composed offew parts not likely to get out of order or to require repair, andcomparatively inexpensive.

My invention is fully described in the following specification, of whichthe accompanying drawings form a part, in which like referencecharacters are used to designate like parts in each of the views, and inwhich :-v

Figure 1 is a side elevation of my invention, partly in section, andshowing the position of the parts just previous to the formation of thenail; Fig. 2 is a similar view after the nail has been formed and readyfor driving; Fig. 3 is a similar View after a nail has been driven andjust previous to the feeding of a new length of wire for another nail;Fig. 4 is an enlarged section taken on the line 4-4:of Fig. 1; Fig. 5 isa side elevation of the head, partly in section, with the parts in theposition shown in F g. 1; and Fig. 6 is a section taken on the line 66of Fig. 5.

In the drawings forming a part of this.

application I have shown a preferred form or embodiment of my invention,comprising a head 7, a handle 8, a lever 9, and parts connectedtherewith to be later described, said head having a hammer face 10 atone end thereof and an ax blade 11 at its opposite end, said hammer facebeing vertically slotted'in its forward edge as shown at 12 for thereception and guiding of a formed nail ready for driving.

The handle 8 is rigidly secured to the head 7 by means of rivets 13 orequivalent fasteners, and is made of sheet metal of inverted U-shape incross section, as clearly shown in Fig. I, a fixed bearing plate 14being provided intermediate the length thereof against which normallybears a pointed dog 15 through the medium ofa leaf spring 16, and I alsoprovide a longitudinally arranged leaf spring 17 at the inner and openside of said handle, secured to a fixed support 18, and having a latch19 thereon.

Longitudinally slidable within the inner handle end is a shuttle 20,also of U-shaped material, having a slot 21 in each side thereof andthrough which passes a pin 22 fixed in the handle 8, whereby saidshuttle is guided in its movement, a coil spring 23 tending to draw saidshuttle in the direction of the head 7 when moved from normal position;said shuttle has a shouldered end 24, an inclined plane 25, a fixed pin26, a fixed bearing plate 27, and a pointed dog 28, normallyheld againstthe plate 27 by means of a spring 29, therein and movable therewith andall of which have important functions.

Pivoted at 30, t0 the lever-9 which is also of U-shaped material, is anarm 31 having a latch32 on one side thereof and having a coil spring 33connected therewith, the tendency of which is to draw said arm towardthe head 7, thereby always maintaining the outer end of said arm incontact with the floor of the shuttle 20 and, as clearly shown in Fig.3, the latch 32 on said arm is adapted to engage with the free end ofthe leaf spring 17 and draw the same toward the lever 9. a

As clearly shown in Fig. 5, the head 7 has an inclined bore3ttherethrough for the passage of a wire 35, a forwardly directed lip 36forming a downwardly and rearwardly inclined recess or flooring 37 at anangle of approximately 30 degrees in the face 38 adjacent said lip, Fig.6, and it will be observed that the under side of said lip isalsodownwardly and rearwardly inclined, this being important as it aidsin determining the formation of the head of the nail.

The lever 9 is pivoted to the head 7 at 39 and the sides of said leverproject beyond said head in order to furnish supports for a wire cutterblock 40 arranged therebetween and riveted thereto, the cutting edgebeing shown at 11, Fig. 5, and said block 10 is also provided with anose 42 normally closely adjacent the lip 36, as shown in Figs. 1 and 5,but permitting the wire 35 to pass therebetween; although not shown indetail, the cutting edge 41 of the block 40 is similarly inclinedtransversely to correspond with the face 38 of the head 7, Flg. 6, andover which it slides in the movement of the lever 9 with respect to thehandle 8,

and the reason for which is to provide a beveled, and thus substantiallypointed, end on the nails. 1

The wire 35 is fed into the rear of the handle 8 through a slot in thearm 31, Fig. 4, between the bearing plate 27 and dog 28, forwardlybetween the bearing plate 14 and dog 15, and through the bore 34: in thehead 7, and the implement is ready for use. The normal positions of theparts are shown in Fig. 1 and, when the lever 9 is manually drawn towardthe handle 8, the cutting edge 41 shears off the portion of wlreprojecting forwardly of the head 7, and th s section of wire may bethrown away as it is not pointed nor of the desired length. In thislever movement toward the handle 8 the arm 31 had engaged the shoulder24 of the shuttle and forced sail shuttle into the rearward positionshown in Fig. 2 until the fixed pin 26 in said shuttle had passed beyondthe latch 19 of the leaf spring 17 and been engaged thereby, thuslocking said shuttle in rearward position; in this rearward shuttlemovement the dog 28 therein had moved along the wire 35 without effectthereon, but the dog 15 had prevented any rearward wire movement and, inthe posi tions of the parts shown in Fig. 2, the wire now extends nofarther than the cutting face of the head 7. When the strain on thelever 9 is released the coil spring 33 draws the arm 31 forwardly,thereby forcing the lever and handle apart, and in this arm movement thelatch 32 thereon engages the free end of the leaf spring 17 and draws itdownwardly, thereby releasing the pin 26 from the latch 19 and theshuttle is released and is instantly drawn forwardly by means of-thecoil spring 23. In this shuttle movement the dog 28 bites into the wire35 and carries it along with the shuttle for the full shuttle movement,the dog 15 permitting this forward wire movement, and a length of wireequal to the length of shuttle movement now projects beyond the head 7,as shown in Fig. 1. When the lever is again forced toward the handlethis length of wire is cut off as previously described, but in the earlystages of lever movement the nose 42 had bent this portion of wiredownwardly over the lip 36 and thereunder into the position shown inFig. 2, the shearing off of this portion of Wire occuring in the laststage of lever movement toward the handle, and it will be noted that thenail now formed rests in the slot 12 in the hammer face. The implementis now used as an ordinary hammer and the nail driven as far as desiredinto the wood or other material being nailed, but with only one strokeof the implement; the lever 9 may now be partially released to releasethe gripping of the nail between the nose 4:2 and lip 36, and, if theimplement is moved a slight distance laterally. it is released from thenail; the lever may now be drawn close to the handle and the hammer faceused to complete the driving of the nail,

after which the lever may be entirely released to feed a new length ofwire through the implement, ready for another nail forming operation.

The nose 42 and lip 36 are so shaped as to form the wire into a loop,the inner surface of which is in the axial plane of the nail itself, inother words, the head of the nail curves upwardly and forwardly,upwardly and rearwardly, and downwardly at a desired angle, the intentof which is two-fold, viz :to provide a hammer striking surface in theaxial line of the nail, and to clinch the downwardly inclined end of thehead into the material being nailed.

It will thus be seen that I provide an implement which successively andcontinuously forms nails of a peculiar shape; said implement also holdseach nail as formed to enable it to be driven into suitable material,although said nails may be thrown from the implement as soon as formedby the release of the lever without driving into any material; the nailsare all of the same shape and length, preserving perfect uniformity; thewire is automatically fed through the implement in desired lengths; theimplement may be used with only one hand, leaving the other hand of aworkman free to hold or manipulate the work; there are no delicate partsrequiring adjustment, or repair; the implement is made almost entirelyfrom stampings; and a highly practical, comparatively inexpensive,implement results which is adapted for many uses.

While I have shown a present preferred combination of specific elements,I do not limit myself thereto, as many changes may be made thereover,within the scope of the following claims, without departing from thespirit of my invention or sacrificing its advantages.

Having fully described my invention, What I claim as new, and desire tosecure by Letters Patent, is

1. An implement of the class described, comprising a head, a handle, areciprocating shuttle, means on said shuttle for feeding wire throughsaid head, means for locking said shuttle in one position, means forreleasing said locking means, means for moving said shuttle to carrysaid wire when so released, and means for forming a nail from said Wire.

2. An implement of the class described, comprising a head, a handle,means for feed ing wire through said handle, a lever, means connectedwith said head and with said lever for bending a length of wire to forma nail head, comprising a lip on said head and a nose on said lever, anda cutter carried by said lever for detaching a formed nail from thewire.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

VERNON THOMAS LYNCH. Witnesses:

JOSEPH N. LICHTENTHAL, EDUARD KREUTZER.

Copies of this trade-mark may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. G.

